Tuesday, Aug. 9, 2016

Sentinel species

S.C.'s dolphins serve to point out possible pollutants

NOAA

Charleston City Paper

They're called sentinel species — animals that provide early detection for environmental hazards. The most famous example of which would be the canary in the coal mine, used to tip off miners to the threat of carbon monoxide, but there are a host of others. Today, in Charleston, S.C., bottlenose dolphins serve as our sentinels for a little-understood group of chemicals known as PFASs — some of the highest national levels of which are found in dolphins that populate our waters.

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Cape Cod’s big drinking water problem

Boston Globe

Though the two Capes seem worlds apart — one populous and commercial, the other open and rustic — they face the same essential challenge: geology. Because most of the Cape is essentially a sandbar, anything spilled on the ground — gasoline, septic discharge, insect repellent — trickles through the sand and mingles with the ground water. Cape Cod has 560 miles of coastline, nearly 1,000 kettle-hole ponds, and one aquifer, all in jeopardy.

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Coastal study reveals hidden pollution exchange

Phys.org

Researchers have uncovered previously hidden sources of ocean pollution along more than 20 percent of America's coastlines. The study offers the first map of underground drainage systems that connect fresh groundwater and seawater, and pinpoints where drinking water is most vulnerable to saltwater intrusion.

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